Native Instruments Sync Modular

Sync Modular was an early modular soft synth that we'd completely forgotten about, but now Native Instruments, who seemingly took ownership of it when it started collaborating with its creator, Dr Sync, in 2003, has made it available for free. Bear in mind, though, that it'll only run under Microsoft Windows 95/98/NT4/2000 (or, err, BeOS R5).

Togu Audio Line TAL-DUB-III

Currently in beta, this is described as an easy to use delay device that also has some special features. Rather than emulating a tape delay, it promises to bring its own sound, and includes an alias free saturation stage, a non-linear 6dB low-pass and a 3dB high-pass filter.

Sonic Entropy Zombie Killah 2

Billed as "the ultimate DnB synth", this is also said to suitable for breakbeat, dubstep and jungle lead sounds. It sports two detuned oscillators and a sub-bass oscillator, plus a range of what are described as "easy and quick modulators".